The Charco de San Ginés is the photogenic heart of Arrecife — a small tidal saltwater lagoon ringed by whitewashed fisherman's houses, with brightly painted small boats tied along its banks. The lagoon fills and empties with the Atlantic tides through a narrow channel under a road bridge to the sea.
A circular footpath about a kilometre long loops the whole pond, with tapas bars and restaurants along the inland side. The best light is early evening, when the white houses glow against the dark volcanic stone of the streets.